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Apatite- and Monazite-Bearing Glass-Crystal Composites for the Immobilization of Low-Level Nuclear and Hazardous Wastes

Published online by Cambridge University Press:  15 February 2011

D. J. Wronkiewicz ,
S. F. Wolf  and
T. S. DiSanto
D. J. Wronkiewicz
Affiliation:
Argonne National Laboratory, CMT, 9700 South Cass Ave., Argonne, IL 60439, [email protected]
S. F. Wolf
Affiliation:
Argonne National Laboratory, CMT, 9700 South Cass Ave., Argonne, IL 60439, [email protected]
T. S. DiSanto
Affiliation:
Argonne National Laboratory, CMT, 9700 South Cass Ave., Argonne, IL 60439, [email protected]
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Abstract

This study demonstrates that glass-crystal composite waste forms can be produced from waste streams containing high proportions of phosphorus, transition metals, and/or halides. The crystalline phases produced in crucible-scale melts include apatite, monazite, spinels, and a Zr-Si-Fe-Ti phase. These phases readily incorporated radionuclide and toxic metals into their crystal structures, while corrosion tests have demonstrated that glass-crystal composites can be up to 300-fold more durable than simulated high-level nuclear waste glasses, such as SRL 202U.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 412: Symposium V – Scientific Basis for Nuclear Waste Management XIX , 1995 , 345
Copyright
Copyright © Materials Research Society 1996

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References

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